Adds method which return all available plugins
Adds method which return all available plugins

Change-Id: I0f0a198613a420d809edb986a20540a6bc418781

redhat-openstack/infrared,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,okolisny/InfraRed